Petroleum Engineering
Relationship between Asphaltene Adsorption on the Surface of Nanoparticles and Asphaltene Precipitation Inhibition During Real Crude Oil Natural Depletion Tests

Yaser Ahmadi

Volume 10, Issue 3 , July 2021, , Pages 69-82

  Using nanoparticles for adsorbing asphaltene is an efficient method for upgrading actual oil samples compared to other expensive mechanical treatments or even solvents, such as n-pentane and n-heptane, and surfactants. This study uses nickel–zeolite oxide nanoparticles for asphaltene adsorption ...  Read More

Chemical Engineering
A Robust Method to Predict Equilibrium and Kinetics of Sulfur and Nitrogen Compounds Adsorption from Liquid Fuel on Mesoporous Material

Mohammadreza Khosravi-Nikou; Ahmad Shariati; Mohammad Mohammadian; Ali Barati; Adel Najafi-Marghmaleki

Volume 9, Issue 2 , April 2020, , Pages 93-118

  This study presents a robust and rigorous method based on intelligent models, namely radial basis function networks optimized by particle swarm optimization (PSO-RBF), multilayer perceptron neural networks (MLP-NNs), and adaptive neuro-fuzzy inference system optimized by particle swarm optimization methods ...  Read More

Chemical Engineering
Nitrogen Adsorption on Molecular Sieve Zeolites: An Experimental and Modeling Study

Erfan Tooraji; Ahad Ghaemi

Volume 9, Issue 1 , January 2020, , Pages 47-67

  Separation of nitrogen from a gaseous mixture is required for many industrial processes. In this study, the adsorption of nitrogen on zeolite 4A was investigated in terms of different adsorption isotherm models and kinetics. An increase in the initial pressure from 1 to 9 bar increases the amount of ...  Read More

Petroleum Engineering
Thermodynamic and Kinetic Investigations of Corrosion Inhibition Behavior of 2-MBT on Steel at a pH of 8

Hojatallah Koraee; Hadi Eskandari; Iman Danaee

Volume 8, Issue 3 , July 2019, , Pages 101-112

  Corrosion results in hazardous and expensive damage to pipelines, vehicles, water and wastewater systems, and even home appliances. One of the most extensively practical methods for protecting metals and alloys against corrosion is to use organic inhibitors. The inhibition capability of 2-Mercaptobenzothiazole ...  Read More

Chemical Engineering – Gas Processing and Transmission
Removal of H2S and Mercaptan from Outlet Gases of Kermanshah Refinery Using Modified Adsorbents (Bentonite and Sludge)

Omid Jalalvandi; Firooz Kheradmand; Farhad Salimi; Farhad Golmohammadi

Volume 8, Issue 2 , April 2019, , Pages 1-14

  In this work, adsorbents, namely bentonite and sludge, modified by iron and copper were used to remove the H2S and mercaptan from Kermanshah refinery. The used adsorbents are inexpensive materials, which substantially decrease the operational costs. The structure of the adsorbents was analyzed using ...  Read More

Chemical Engineering
A Molecular Simulation of Natural Gas Dehydration by 3A Zeolite Nanostructure

behrouz Bayati; Mahmoud Rahmati

Volume 6, Issue 3 , July 2017, , Pages 68-78

  The adsorption and separation properties of 3A zeolite are investigated by using Grand Canonical Monte Carlo (GCMC) simulation. To obtain the adsorption isotherms of water, methyl mercaptan, and methane on 3A zeolite, COMPASS Force Filed is used. The adsorption isotherms of the pure components and the ...  Read More

Assessing the Asphaltene Adsorption on Metal Oxide Nanoparticles

Fatemeh Amin; Ali Reza Solaimany Nazar

Volume 5, Issue 3 , July 2016, , Pages 62-72

  The Taguchi design of experiments (DOE) approach is adopted here to evaluate the impact ofeffective factors such as nanoparticles type, nanoparticles to model solution mass ratio, asphaltenestructure, and temperature on asphaltene adsorption equilibrium. Herein, the toluene-asphaltenesolution model is ...  Read More

An Experimental Examination of Adsorption Phenomenon in Foamassisted Water Alternative Gas: The Effect of Injection Rate

Mohammad Amin Safarzadeh; Seyyed Alireza Tabatabaei Nezhad; Eghbal Sahraei; Mehdi Mohammad Salehi

Volume 3, Issue 2 , April 2014, , Pages 37-50

  The main factor affecting the economics of foam-assisted water alternative gas (FAWAG) process is the loss of foaming agent by adsorption onto reservoir rocks. In this study, the effects of phases, surfactant concentration, salinity, adsorbents, and sacrificial agent on adsorption density were investigated ...  Read More

The Generalized Maxwell-Stefan Model Coupled with Vacancy Solution Theory of Adsorption for Diffusion in Zeolites

Seyyed Milad Salehi; Mahmood Reza Rahimi

Volume 3, Issue 1 , January 2014, , Pages 34-40

  It seems using the Maxwell-Stefan (M-S) diffusion model in combination with the vacancy solution theory (VST) and the single-component adsorption data provides a superior, qualitative, and quantitative prediction of diffusion in zeolites. In the M-S formulation, thermodynamic factor (Г) is an essential ...  Read More

An Experimental Study of Adsorption Breakthrough Curves for CO2/CH4 Separation in a Fixed Bed of Nanoporous Shaped Copper Trimesate Metal Organic Framework

Tahereh Asadi; Mohammadreza Ehsani

Volume 2, Issue 4 , October 2013, , Pages 54-66

  Copper trimesate (Cu-BTC) MOF has been pointed out as a promising adsorbent for separating carbon dioxide from methane. However, MOF’s need to be shaped prior to their use in packed bed adsorbers in order to reduce pressure drop; on the other hand, the production of mechanically resistant shaped ...  Read More